Oil burner



July 1, 1930.

s. WINKLER 1,769,008

OIL BURNER I Filed Nov. 24, 1926 3 Sheets-Sheet l S. WINKLER July 1,1930.

OIL BURNER Filed Nov. 24, 1926 3 Sheets-Sheet 2 Invert/2&0 r: QZehen/Mien Patented July 1, 1930 UNITED STATES PATENT OFFICE STEPHENWINKLER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 0F TWO-THIRDS TO LOUISH. LEHMAN AND LEON EDELSQN, BOTH OF PHILADELPHIA, PENN- SYLVANIA on.BURNER Application filed November 24, 1926. Serial No. 150,463.

This invention relates to fluid fuel burners and more particularly to anoil burner of the rotary sprayer type.

The use of fluid fuel burners is becoming more and more common as theadvantages resulting from their use become better known and appreciated.However, even in spite of the rather marked advance which has been madein the art of burning oil as fuel for heating and other purposes, theoil burners in use prior to this invention have been subj ect to manyobjectionable features and much adverse criticism which, if notobviated, will eventually result in a decrease in interest on the partof those who are now inclined to accept this type of burner with favor.

One of the chief objects of this invention is the design andconstruction of an oil burner which is exceedingly simple andinexpensive to manufacture and which is highly efficient in use and lowin cost of upkeep.

A further object is the provision of such a burner wherein a highheating efficiency is attained in hot water heaters, boilers, fur

naces and the like, this elliciency being unim paired by the quality offuel oil which is used. In other words, this burner is designed tooperate with equal efficiency when either high or low "iscosity oils areused.

A still further object of the invention is the provision of an oilburner in which atomization or vaporization of the oil is effected to adegree approaching perfection. So etiicient is this atomization thateven crude oils may be finely atomized and prepared for per fectcombustion.

A still further object is the provision of means for regulating theamount of oil supplied to the rotary sprayer head and the furtherprovision of means for effectively delivering and distributing the oneor more supplies of air which are necessary for proper atomization ofthe oil prior to ignition.

A still further object is the provision of means for regulating andadjusting the size, height and shape of the flame without in any mannerrequiring alteration of the parts other than their relativereadjustment.

A still further object is the provision of means for automaticallyeffecting ignition of the oil as soon as the oil has been properlyatomized by the action of the rotary sprayer head, this means beingeither mechanically or electrically controlled. In each instance thisautomatic means operates to effectually re-ignite the atomized fuelshould the burner flame for any reason have been extinguished.

A still further object is the provision of an oil burner system operableby means of an electric motor wherein no oil whatever can be deliveredtothe rotary sprayer head to subsequently leak upon the furnace floorwhen the motor is at rest. There is thus eliminated the necessity foremploying the usual drip bucket for opening the motor circuit so thatany danger of the drip bucket failing to 0perate and causing oil to dripupon the furnace floor is obviated.

A still further object is the provision of an improved feeding mechanismfor delivering the oil to the rotary sprayer head for ef-' fectiveatomization, this mechanism being so arranged that there is nopossibility of oil being delivered from the oil well unless the motor isitself in operation.

A still further object is the elimination of all ball or rollerbearings, which are ordinarily employedin connection with the rotatingparts, such as the feeding mechanism, of the oil burner. Not only havethese hearings been eliminated but the parts have been so arranged thatthey substantially float in oil, thus eliminating any necessity forseparate oiling means.

Further objects, and objects relating to details and economies ofconstruction and operation will definitely appear from the detaileddescription to follow. Structures constituting preferred embodiments ofthe invention are illustrated in the accompanying 3 drawings, forming apart of this specification, in which:

Figure 1 1s a vertical sectional elevation of the rotary oil burner andits feeding mechanism, together with the operating and gas views ofpreferred forms of oil feeding mechanisms.

Figure 7 1s a dlagram'matic VleW of an electrical circuit forautomatically controlling the operation of the gas pilot control valve.V

Figure 8 is a sectional view of the control valve for controlling thesupply of gas to the gas pilot.

In the drawings, the same reference numerals refer to the same partsthroughout the several views.

In general this invention comprises a burner mechanism which is operatedby an electric motor suitably connected thereto. The burner mechanismproper consists of a main pedestal member upon .which is mounted anannular burner ring, the pedestal member and burner ring acting jointlyto house the oil feeding device. founded in an oil well, or reservoirsupported or suspended in any suitable manner within the pedestal memberand comprises essentially a pair of relatively rotatable members whichare complementally formed with respect to one another to effect thedelivery of the oil from the oil well or reservoir to a rotary sprayerhead which is located at the upper end of the relatively rotatablemembers.

Operatively associated with the relatively rotatable members are aseries of vanes or other means for circulating currents of air forintimate commingling with the oil mist which is tangentially projectedfrom the rotary sprayer head due to the centrifugal force generated bythe rapid rotation of the head. An auxiliary blower attachment ispreferably associated with the motor for forcing additional supplies ofair around and through the tangential spray of oil for more effectivelyobtaining the desired atomization or vaporization of the raw fuelnecessary for the full and complete combustion of the fuel. In one formof the invention it has beenfound desirable to provide a baffle plateagainst which the air may be impinged for subsequent deflection into thepath of the tangential spray of fuel.

Associated with the oil feeding mechanism in suitable manner is avertically adjustable collar surrounding the outer of the relativelymovable members below the level of the oil in the reservoir forregulating the quantity of oil to be delivered to the sprayer head. Itmight be well to point out at this time that the rotating elements ofthe oil feeding mech- This feeding device is anism are so arranged thatthey substantially float in oil, without the provision or necessity ofeither ball or roller bearings, the

fuel oil itself serving as the sole lubricant re uired.

s will appear more definitely hereinafter the annular burner ring isarranged substantially concentrically with respect to the rotary sprayerhead and is provided with a pair of annular grooves or" channels forreceiving whatever oil has not been burned. This oil, which is inreality a condensation of the un-ignited atomized fuel, is carried back,in one instance, to a balanced cup which, upon being filled apredetermined amount, operates to open a valve for controlling thesupply of gas to a gas pilot disposed within the burner ring. Thisprovides an automatically operable mechanical device for insuring amaximum pilot flame for igniting the atomized fuel, this flame servingat the same time as an effective agent for preheating the sprayer headand its associated parts. In another instance, there is provided anautomatically operable electrically controlled device for the samepurpose, the balanced cup in this case being dispensed with andthecondensed oil being carried directly back to the oil reservoir or to thestrainer tank. In this latter instance an electrical circuit is providedwhich includes a thermocouple located in the vicinity of the combustionchamber and a solenoid operatively associated with the gas valve forcontrolling the pilot flame. Should the fuel supply be cut ofl orinterfered with in any manner so that the burner flame goes out the gasvalve, through the operation of one system or the other as will beexplained more fully hereinafter, is opened wide to supply a greateramount of gas to the pilot light whereupon the adjacent parts of theburner are preheated and the atomized fuel is readily ignited.

Attention is called to the fact that the burner mechanism and the motorfor operating the same are so constructed and arranged that should themotor for any reason he stopped there is no possibility of oil beingdelivered to the sprayer head or to any other partto subsequently leakupon the floor of the furnace. Such a construction and arrangementobviates entirely the necessity for employing the usual drip bucket,operable by the weight of the oil therein, for opening the motor circuitto stop the motor. It has been found that where such a bucket isemployed sediment or other foreign matter beneath the bucket oftenprevents its being lowered the requisite distance for opening the motorcircuit and as a result thereof the motor continues to operate andsupplies oil to the rotary sprayer head even though the oil is not beingburned. In the case of the burner herein described, the oil feedingmechanism automatically stops when the motor stops and starts again onlyupon the starting of the motor. Further, whenever the flame dies out theunignited vaporized oil which is thrown against the burner ring findsits way into the channels formed in the ring from whence it is carriedto the balanced cup for operating the pilot light valve or directly backto the oil reservoir when the electrically controlled pilot valve isemployed.

Referring more particularly tothe drawings and especially to Fig. 1, itwill be seen that the oil burner comprises a pair of castings 10 and 11,each of which castings is of substantially frusto conical cross section.The lower casting 10 serves as the main pedestal member of the burnerand is provided at its upper edge with an interiorly presenting annularflange or shelf 12. An oil well or reservoir 13 is projected downwardlythrough the central opening in the annular flange or shelf 12, the wellbeing open at its upper end and provided with an annular flange 14 forengaging the upper surfaces of the pedestal shelf 12. Bolts 15 or anyother suitable securing means are provided for permanently or detachablysecuring the well in suspended position within the pedestal member 10.The bottom wall of the oil well 13 is provided with .an enlargedinteriorly threaded boss 16 for the purpose to be hereinafter described.

The upper casting 11 which is complementally formed with respect to thelower pedestal member 10 is seated upon the upper perimetral edge of thepedestal member and serves as an annular burner ring for the oil burner.In order to more securely seat this annular burner ring upon theperimetral edge of the pedestal member 10, a number of spaced sockets 17are formed in the upper edge of the member 10 for receiving acorresponding number of integrally formed lugs 18 suitably formed on thebottom edge of the annular burner ring 11. The burner ring is providedin its interior surfaces with a pair of concentric channels or grooves19 and 20, the channel 19 being of greater diameter than and verticallyspaced from the channel 20. A suitable passage way or port 21 isprovided for interconnecting the channels 19 and 20.

Projecting upwardlyfrom the oil well- 13, is a stem 22, the lower end ofwhich is threaded into the boss 16 at the bottom of the well. This stein22 is preferably formed with an upwardly spiralled groove 23 in itsexterior surface, this groove being continuous substantially throughoutthe entire length of the stem. Closely surrounding this stem andconstituting a cover for the spiral groove 23, is a tubular member 24,the bottom end of which rests upon a number of shims or washers 25surrounding the lower portion of the stationary stem 22. These washers25 serve as a lower bearing for the tube 24, which latter is rotatablewith respect to the stem 22. A pulley 25 is fixed to the tube 24 for thepurpose of imparting rotation thereto, this pulley 25 being connected toa pulley 26 on the operating motor 27 by a belt 28. 'While a beltconnection has been shown between the electric motor 27 and the rotatingmember 24 of the burner, as in Fig. 1, it should be understood that anyother suitable driving mechanism may be employed, such as a frictiondrive or a gear drive should either of the latter be found verydesirable. The lower end of the rotatable tubular member 24 is providedwith a pair of oppositely disposed substantially vertical extendingslots 29 and a vertically adjustable sleeve or collar 30 is provided forcovering these slots to greater or lesser extent for the purpose to bepresently explained. Fixedto the upper end of the rotatable member 24 ofthe burner is a collar 30 provided with an annular flange 31, the uppersurface of this flange being flush with the top end of the rotatablemember 24 and being disposed in a horizontal plane-lying somewhat abovethe upper channel 19 but well below the upper edge of the annular burnerring 11. The flange 31 of the upper collar 30 is provided with a seriesof spaced integrally formed lugs 32, to the lower ends of which issecurely fastened a substantially dish-shaped sprayer head 33. Thisseparate set of air circulating vanes 36 secured in rigid manner to' therotatable member 24.

From the foregoing description of the burner mechanism shown in Fig. 1,it will be seen that when the motor 27 is in operation, a rotativemovement is imparted to the tubular member 24 and in turn to the sprayerhead 33 and the air circulating vanes 35 and 36. Assuming that oil isbeing supplied to the oil reservoir 13, the relative movement betweenthe tubular member 24 and the spirally grooved stationary stem 22 willresult in oil being lifted through the spiral passage way formed betweenthe stationarystem and the rotating tubular member to and upon therotating sprayer head Due to the rapid rotation .of this sprayer head,the oil is projected tangentially from the head in the form of .a finespray against the annular burner ring 11. At the'same time that this oilis being tangentially sprayed from the centrifugal sprayer head, the aircirculating vanes 35 and 36 force currents of air around the peripheraledge of the sprayer head and through the central aperture thereof,respectively, so as to intimately mingle with the oil spray head intomore direct union with the oil spray.

In the particular arrangement shown in Fig. 1, it will be seen that thepedestal member 10 is provided with a laterally extending member 37 towhich is secured one end of an elongated supporting plate 38, theopposite end of the latter being secured to the supporting frame of themotor 27. Mounted upon this plate 38 intermediate the motor and theburner mechanism proper is an oil lever con trol tank 39 and an oilstrainer tank 40. It is, of course, understood that the tanks 39 and 40may be combined in such manner that the strainer tank is eliminated andthe strainer element provided in the oil level tank 39, should thislatter expedient be found advisable. The oil level control tank issupplied with oil from the main tank, (not shown) through the mainsupply pipe 41 and the tank 39 is connected to the tank 40 by the pipe42. The oil well or reservoir 13 of the burner is connected with thefuel oil supply through the pipe 43. The oil level control tank 39serves to house any suitable type of float mechanism, a ball float beingillustrated, for regulating the height of the oil level in the tank 39and accordingly the level of the oil in the burner reservoir 13.

Suitably mounted upon the plate 38 is a gas valve indicated generally bythe reference numeral 44. This valve is normally partially open andsupplies gas through the gas line 45 to a pilot light 46 located justwithin the burner ring 11 for igniting the atomized fuel oil. Leadingfrom the lower annular channel 20 of the burner ring is a downwardlyinclined pipe 47, the open end of which is disposed above a balancingcup 48. This balancing cup is fixed to one end of a balanced lever 49,the opposite end of which lever is turned upwardly for operativelyengaging the gas valve 44. A counter-weight 50 is secured to that end ofthe lever 49 which is away from the balancing cup 48 to insure thenormally partial closure of the gas valve 44. The fulcrum point 51 ofthe lever 49 is located at a point intermediate the counterweight 50 andthe balancing cup 48. It will be seen that upon starting themotor 27 arotative movement is imparted to the tubular member 24 and to thesprayer head 33 whereupon oil from the reservoir 13 is carried upwardlythrough the spiral passage way an delivered upon the rotary sprayerhead. Here the oil becomes atomized due to its mixture' with the aircirculated by the vanes 35 and 36, but the gas flame of the gas pilotlight 46 is normally insufiicient to cause ignition of this atomizedfuel. The atomized fuel, however, upon striking the internal walls ofthe burner ring 11 condenses and flows into the channels 19 and 20 fromwhence it is carried, through the pipe 47, to the balancing cup 48. Whenthe weight of the oil in this balancing cup reaches a certainpredetermined amount, the downward force exerted by the counter-weight50 is overcome and the valve 44 is opened wide whereupon a greatersupply of gas is supplied through the gas line 45 to the gas pilot light46. The flame of the gas pilot light is thus considerably increased andis suflicient to ignite the atomized fuel oil. This ignition of the fueloil is materially assisted by reason of the fact that the flame of thegas pilot preheats the sprayer head as the latter rotates within itsburner ring. The balancing cup 48is provided in its bottom with anopening 52 of a size sufficient to permit the oil therein to graduallypass into a receptacle 53 suitably connected with the strainer 40. Asthe oil leaves the balancing cup 48, its weight decreases until it isovercome by the downward force exerted by the counter-weight 5Owhereupon the gas Valve 44. is again partially closed. It will, ofcourse, be understood that the operation is entirely automatic and takesplace just as well when the burner flame dies out as when the burner isinitially started. In other words, there is provided an automatic meansfor effecting ignition of the atomized oil when the motor 27 is startedand the oil feeding mechanism is operating, as well as for effectingre-ignition of the atomized oil when the burner flame, for one reason oranother, has gone out while the feeding mechanism continues to operate.

Fig. 7 illustrates the use of an electrical circuit for controlling thisautomatic ignition and re-ignition of the atomized fuel. lVhere anelectrical system of this nature is employed, it becomes possible todispense entirely with the balancing cup 48 as shown in Fig. 1 and itsassociated parts and the return pipe 47 may be arranged to carry theunignited condensed oil directly back to the oil reservoir 13 or toeither of the tanks 39 or 40. As is clearly shown in Fig. 7, atransformer 55 is employed, the primary terminals of which are connectedto the terminals 56 and 57 of the motor 27. The secondary circuit of thetransformer 55 includes a thermocouple device 58 of any suitable typewhich may be conveniently disposed in the vicinity of the combustionchamber of the furnace so that it may be readily affected by the heat ofthe burner flame. The gas pilot d valve is employed which is verysimilar to the valve 44 used in the system shown in Fig. 1, the onlychange being that the stem 59 of the valve is operatively associatedwith a Cal solenoid connected in series with the thermocouple 58. Aswill clearly appear from Fig. 8, the energization or de-energization ofthe solenoid 60 will operate to partially close or completely open thevalve 44. It will thus be seen that upon starting the motor 27 and inturn, the oil feeding mechanism, a quantity of oil will be delivered tothe sprayer head to be subsequently atomized. However, the pilot light46, being insufliciently supplied with gas due to the partially closedvalve 44, will be unable to cause immediate combustion of the atomizedfuel. This, of course, results in a cool furnace and consequently thethermocouple cools and closes the secondary circuit on the transformer55 whereupon the solenoid 60 is energized to push the plunger 59*upwardly to open the gas valve 44 wide. This ermits a greater supply ofgas to the pilot light 46 so that the gas flame is increased asuiiicientamount to cause ignition of the atomized or vaporized fuel.The furnace chamber then becomes heated, the thermocouple 58 which isclosely associated with this chamber opens and the secondary circuit isopened with the result that the solenoid 60 is de-energized and thevalve 44 returns to its normally partially closed position. It will beseen that the operation of the gas valve 45 is entirely automatic, theoperation being exactly the same when the oil supply is cut off orinterfered with, while the feeding mechanism is in operation. In thislatter instance, the burner flame dies out, the thermocouple cools andthe secondary circuit is closed. The solenoid is then energized to pushthe plunger 59 of the gas valve 44 up to open the gas valve forsupplying a greater amount of gas to the pilot light. After the oilbegins to flow again, this pilot light is sufiicient to ignite thevaporized fuel, whereupon the heating chamber (and conse quently thethermocouple) is heated up. This results in the separation of thethermocouple elements, the secondary circuit is opened, the solenoid isde-energized'and the gas valve once more becomes partially closed. Ashas-already been explained, the surplus oil in the annular channelswhich has not been burned, is carried directly back to the 1Ztrainer orto the oil reservoir as the case may Fig. 3 shows still anotherarrangement wherein the burner mechanism is shown disposed on theoutside of the furnace, the idea being here to blow the atomized fuelinto the furnace through an opening 61 in the wall 62 thereof. It willbe noticed that the burner ring 11 is provided with a laterallyextending annular flange 63 which serves as a support for the hood 64covering the top of the burner. This hood is provided with a forwardlyextending nozzle 65, the extreme forward edge of which is projected acertain distance from the wall of the burner. In thisparticularinstance, the gas pilot is removed from the burner ring and isdisposed as at 66 with its open end in the vicinity of the forward endof the nozzle 65. A copper plate 67 may be provided in the nozzle forpreheating pur poses, the flame from the gas pilot being arranged suchthat it plays upon this copper plate to heat it sufiiciently forassisting the initial ignition of the atomized fuel.

It will be noticed also that the motor 27 is provided at one end thereofwith a hood or cover 68 in which is housed a fan 69. This cover isprovided with a single port 70 from which air is blown through the airlines 71 and 72. The stem 22 of the burner mechanism is provided with acentral aperture 73, to the bottom end of which one end of the pipe 72is connected. A bafile plate 74 is provided within the hood 64 at thetop of the burner, this baffle plate being provided with a plurality ofapertures 75 through which air, delivered by the pipe 71 from the blower68, is directed to force the atomized fuel into the furnace by way ofthe nozzle 65. At this point attention is called to the fact that a hoodsimilar to the hood 68 shown in Fig. 3 is provided for the motor 27 inthe systems shown in Figs. 1 and 7 for the purpose of supplying anauxiliary current of air upwardly through a central bore in thestationary stem 22 of the burner. It will also be understood that ineach case, the annular burner ring is provided with the laterallyextending annular flange 63 so that, if desired, a hood may be appliedto the burner should it be desired to position the same on the outsiderather than on the inside of the burner.

Fig. 4 shows a modified form of an atomizing mechanism, the feedingmechanism in this case being similar to that shown in Figs. 1 and 3. Inthis case the tubular member 24 has fixed thereto at the upper edgethereof an elongated collar 76. The upper end of this collar isprovidedwith a laterally extending annular flange 77 and intermediate the upperand lower ends thereof is an integrally formed dish-shaped sprayer head78. A suitable fan 79 is fixed to and carried by the collar 76, this fanbeing disposed below the sprayer head 78. Mounted upon 'the upper end ofthe stationary stem 22 in any suitable manner, is an inverteddish-shaped baflle plate 80 provided with a series of spaced legs 81between which air, delivered through the central bore of the stem 22,may be directed for impingement against the baffle p ate 80. In thisparticular embodiment of the invention, air is thrown upwardly aroundthe peripheral edge of the sprayer head 78 and downwardly upon the uppersurface thereof to effect an intimate mixture thereof with the oilspray. In addition to the fan 79, the laterally extending annular flange77 may be formed in the shape of vanes for assisting the circulation ofair through. and around the different modifications of the oil feedingmechanisms. Fig. 5 shows the tubular member 24 surrounding the spirallygrooved stationary member 22, the sprayer head 82 in this case beingformed integrally with the sleeve 83 fixed to the rotating member 24.Fig. 6 shows an arrangement wherein a pair of tubular members 84 and 85are nested one within the other and both of which rotate together withrespect to the stationary stem 22. In this last case, the tubular member84 is spirally grooved on its exterior surface in an opposite directionto that of the spiral groove on the member 22. It will thus be seen thatthe tubular members 84 and 85 constitute covers respectively for thespiral grooves on the members 22 and 84, whereby to form separatepassage ways for delivering the oil from the reservoir 13 to the sprayerhead 82. It is, of course, understood that this latter feeding mechanismcomprising a pair of tubular members rotatably mounted on the tubularstem 22 may be substituted for the single tubular member 24 shown inFigs. 1, 3 and 4. Due to the rotation of the tubular members 84 and 85about the stationary stem 22, the oil in the reservoir 13 is forcedupwardly through the outer spiral passage way at the same time that itis lifted upwardly through the inner passage way, thereby providing forthe delivery of a greater amount of oil-to the sprayer head should thislatter be'necessary.

It will be seen that this construction of oil burner contemplates theprovision of no complicated or cumbersome machinery. Not only is itquiet, efficient and economical in use but it is also safe due to thefact that no oil whatever can be delivered to the sprayer head when themotor is not in operation. Further, means are provided for regulatingthe quantity of oil delivered to the sprayer head which regulation maybe had by vertically adjusting the collar 30, by varying the number ofwashers 25 which support the tubular member 24, or by adjusting thefloat device in the tank 35 for regulating the level.

of the oil in the reservoir 13. Further, the size and character of theburner flame can be readily adjusted by substituting one or the other ofthe various forms of oil feeding and atomizing mechanisms shown in theseveral views in the drawings. It is, of course,

' understood that various other forms and ed to be limited or restrictedin respect to details of assembly and it is desired to claim the samebroadly, as well as specifically as indicated by the appended claims.

What I claim is:

1. In an oil burner, an oil feeding mechanism comprising a verticallyextending stem, a tubular member concentrically associated with saidstem, and a spiral passage for the oil arranged between said stem andtubular member, the latter being relatively rotatable with respect toeach other whereby to draw the oil upwardly through said passage andsaid tubular member being provided with elongated slots at its lower endoperative to force oil into the bottom end of said spiral passage whensaid tubular member is rotated.

2. In an oil burner, an oil feeding mechanism comprising a stationarystem spirally grooved on its exterior sur ace, a member closing saidstem and arranged for rotation t-hereabout in such manner as to lift theoil through said spiral groove, said member being provided withelongated slots at its lower end for forcing oil into the bottom end ofsaid spiral groove upon rotation of said member, and means operativelyassociated with said slots for regulating the amount of oil so lifted.

3. In an oil burner, an oil feeding mechanism comprising a relativelystationary stem spirally grooved throughout substantially its entirelength, a tubular member closely associated with said stem and coveringsaid groove to constitute a spiral passage for the oil, said tubularmember being provided at its lower end with a plurality of verticallyextending slots, and an adjustable collar mounted on said tubular memberand arranged to cover said slots to a greater or less extent.

4. In an oil burner, an oil feeding mechanism comprising a verticallyextending stationary stem, a pair of tubular members associated withsaid stem, said members being relatively stationary with respect to eachother and rotatable with respect to said stationary stem, and a pair ofoil feeding passages arranged respectively between said stem and saidtubular members, said passages being spiralled in opposite directionswhereby to simultaneously lift the oil through one of said passages atthe same time that the oil is forced through the other of said passages.

5. In an oil burner, an oil feeding and atomizing mechanism comprising avertically extending stem and a tubular member surrounding said stemthroughout substantially the entire length thereof, said stem and memberbeing relatively rotatable with respect to each other, a collar fixed tosaid member at its upward end provided with an outwardly extendingannular flange, an oil sprayer head carried by and spaced from saidannular flange, and means for forcing a current of air between saidsprayer head and annular flange for effecting atomization of the oilsupplied to said sprayer head.

6. In an oil burner, an oil feeding and atomizing mechanism comprising astation ary stem spirally grooved throughout substantially its entirelength, a rotatable casing embracing said stem and constitutingconjointly with said groove a spiral passage for the oil, a sprayer headcarried by and arranged for rotation with said casing, a baflie platearranged centrally with respect to but spaced from the main body of saidsprayer head, and means for circulating a current of air against saidbaffle plate for effectually atomizing the oil which'is carried throughsaid passage to said sprayer head.

7. In an oil burner, an oil feeding and atomr izing mechanism comprisinga pair of cen-v centrically arranged relatively rotatable membersproviding between them an upwardly extending passage for the oil, therotatable one of said members being provided at its lower end with oneor more slots through which oil is forced into the lower end of saidpassage, a sprayer head carried by and arranged for rotation with one ofsaid members, and a plurality of air circulating vanes carried by saidsprayer head arranged for efiectually commingling a supply of air withthe oil vapor through the rotation of said sprayer head.

8. In an oil burner, an oil feeding and atomizing mechanism comprising astationary stem spirally grooved throughout substantially its entirelength, a rotatable casing embracing said stem and constitutingconjointly with said groove a spiral passage for the oil, a sprayer headcarried by and rotatable with said casing, said sprayer head beingsubstantially dish-shaped and centrally apertured, and means forcirculating air through the central aperture of said sprayer head andaround the peripheral edge thereof whereby to effectually commingle airwith the oil vapor through the whirling action of said sprayer head.

9. In an oil burner, an oil atomizing mechanism comprising a relativelystationary stem provided with a central bore, said bore constituting anauxiliary passage for supplying air to said mechanism, a tubular memberrotatably mounted on said stationary member, a sprayer head carried byand rotatable with said tubular member, means for supplying a quantityof oil to said sprayer head upon rotation of said tubular member, and afan rotatable with said sprayer head for directing a current of airupwardly beyond the peripheral edge thereof, said air current beingsupplemented by an auxiliary current of air supplied through the centralbore of said stationary stem.

10. An oil burner comprising an upper and r lower frame members, an oilwell suspended within and supported by said lower frame member, theupper end of said oil well being open, and an oil feeding mechanismincluding a spirally grooved stem threaded into the bottom of said oilwell and projecting upwardly beyond the open end thereof, the upper endof said mechanism being disposed within the confines of said upper framemember.

11. An oil burner comprising a frame member, an oil well suspendedwithin said frame member, a stem threaded into the bottom of said oilwell and extending vertically thereabove, a tubular member surroundingsaid stem and arranged for rotation with respect thereto, the lowerportions of said stem and tubular member being normally submerged belowthe level of the oil in the well, and means for vertically adjustingsaid tubular member with respect to said stem.

12. An oil burner comprising a frame member, an oil well suspendedwithin said frame member, a vertically extending stem mounted in thebottom of said oil well and extending there above a substantialdistance, said stem being provided in its exterior surface with anupwardly extending groove, a tubular member surrounding said stem andforming a cover for said groove, the lower end of said tubular memberbeing provided with substantially vertically extending slots, and acollar arranged exteriorly of said tubular member for longitudinaladjustment in the vicinity of said slots whereby upon relative rotationof said stem and tubular member a greater or less amount of oil in theoil well will be lifted through said upwardly extending groove dependingupon the adjustment of the said collar with respect to the slots.

13. An oil burner comprising upper and lower frame members, each of saidmembers being of frusto conical section and said members beingcomplementally formed to seat one upon the other, an oil well supportedby the lower frame member,'an oil feeding mechanism associated with saidoil well, and a rotary sprayer head-disposed at the upper end of saidfeeding mechanism and arranged lf)or rotation within said upper framemem- 14. An .oil burner comprising upper and lower frame members, eachof said members being of frusto conical section and said members beingcomplementally formed to seat one upon the other, an oil well supportedby the lower frame member, an oil feeding mechanism associated with saidoil well, and a rotary sprayer head disposed at the upper end of saidfeeding mechanism and arranged for rotation within said upper framemember, said upper frame member being provided with an interiorlyprojecting annular channel.

15. In an oil burner, a supporting pedestal comprising a lower framemember and an upper frame member, said frame members beingcomplementally formed to provide a completed frame of substantial frustoconical section, said lower member being provided at its upper edge withan interiorly projecting annular flange and said upper member beingprovided with a pair of concentric annular channels vertically offsetwith respect to each other, said channels being provided with anintercommunicating ort. P 16. An oil burner comprising a main pedestalmember, an oil well suspended within and carried by said pedestalmember, a ring member seated upon the upper perimetral edge of saidpedestal member and projecting thereabove, a vertically extending stem,carried by said oil well, the exterior surface of said stem beingcontinuously grooved upwardly, a tubular member closely associated withsaid stem and constituting a cover for said continuous groove, a sprayerhead fixed to the upper end of said tubular member and arranged forrotation within said ring member, means for regulating the amount of oilintroduced into the passage formed by said continuous groove and itstubular member, and means for imparting a rotative movement to saidtubular member and said sprayer head whereby to effect delivery of theoil from the well to the said sprayer head throu h said passage.

17. in oil burner comprising a main standard, an oil well suspendedwithin said standard, the upper end of said well being opened, and anoil-feeding and rotary sprayer mechanism detachably carried by said oilwell, said mechanism including a spirally grooved stem threaded into thebottom of said oil well and projecting upwardly through the open endthereof.

18. An oil burner comprising a main standard, an oil well suspendedwithin said standard, the upper end of said well being open, a burnerring mounted upon the upper perimetral edge of said standard, an oilfeeding mechanism founded upon the bottom of said oil well andprojecting upwardly through the open end thereof, said mechanismincluding a pair of relatively rotatable members provided with an oilpassageway therebetween, a rotary sprayer head associated with one ofthe members of said feeding mechanism, and means for simultaneouslyimparting a rotative movement to said sprayer head and effectingoperation of said feeding mechanism to lift the oil from said oil well,the plane of rotation of said sprayer head lying etween the top andbottom plane of said burner ring.

Signed at Philadelphia, county of Philadelphia, State of Pennsylvania,this 22 day of November, 1926.

STEPHEN WINKLER.

